The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 14 |
| 2 | 100 |
| 3 | 472 |
| 4 | 1691 |
| 5 | 4988 |
| 6 | 12744 |
| 7 | 29160 |
| 8 | 61149 |
| 9 | 119482 |
| 10 | 220220 |
| 11 | 386464 |
| 12 | 650455 |
| 13 | 1056056 |
| 14 | 1661648 |
| 15 | 2543472 |
| 16 | 3799449 |
| 17 | 5553510 |
| 18 | 7960468 |
| 19 | 11211464 |
| 20 | 15540019 |
| 21 | 21228724 |
| 22 | 28616600 |
| 23 | 38107160 |
| 24 | 50177205 |
| 25 | 65386386 |
| 26 | 84387564 |
| 27 | 107938000 |
| 28 | 136911407 |
| 29 | 172310896 |
| 30 | 215282848 |
[1,14,100,472,1691,4988,12744,29160,61149,119482, 220220,386464,650455,1056056,1661648,2543472, 3799449,5553510,7960468,11211464,15540019, 21228724,28616600,38107160,50177205,65386386, 84387564,107938000,136911407,172310896,215282848] |